the navy's seal team six had just rescued two hostages, including an american woman. this time, the action was in somalia. in how many countries are we currently engaged in a shooting war? >> leon panetta: it's a good question. ( laughs ) that's... you know, it's... >> pelley: you have to stop and count. >> panetta: got to stop... i'll have to stop and think about that, because, you know, obviously, we're going after al qaeda, wherever they're... they're at. and clearly, we're... we're confronting al qaeda in pakistan. we're confronting the nodes of al qaeda in yemen, in somalia, in north africa. >> pelley: when you're secretary of defense, it's a small world, and a dangerous one. panetta was covering it when we caught up with him on a trip to afghanistan, where he has 90,000 troops; iraq, where the war was ending; and libya, where he'd helped depose qaddafi. panetta travels on a flying command post, where he can reach every american warplane, submarine and missile silo. if the president ordered a nuclear war, panetta would launch it from what they call the "doomsday